Home / 18,645.85-25,746.83-12,386.17

Finding the Fourth Proportional to 18,645.85, 25,746.83 and 12,386.17

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Solution

The fourth proportional to 18,645.85, 25,746.83 and 12,386.17 is: 17,103.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.85 : 25,746.83 = 12,386.17 : x
  2. Step 2: Convert to fraction form
    18,645.85/25,746.83 = 12,386.17/x
  3. Step 3: Cross multiply
    18,645.85x = 25,746.83 × 12,386.17
  4. Step 4: Simplify right side
    18,645.85x = 318,904,613.34
  5. Step 5: Solve for x
    x = 318,904,613.34/18,645.85
  6. Step 6: Final answer
    x = 17,103.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.